FILE - In this Thursday, Apr. 25, 2013, photo, the logo of Chevron is seen at a gas station downtown Los Angeles. As anxiety surrounding the Ebola crisis in Africa spread, economists say it’s causing corporations to reassess their strategies and damaging the regional economy but so far causing no broader economic impact. Caterpillar and several mining companies have evacuated employees from Liberia. British Airlines has canceled flights to the region. Exxon and Chevron say they’re waiting to see whether public health authorities can contain the Ebola outbreak in three West African countries. (AP Photo/Damian Dovarganes)